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Thomas Gleixnerd2912cb2019-06-04 10:11:33 +02001/* SPDX-License-Identifier: GPL-2.0-only */
Kirti Wankhede7b969532016-11-17 02:16:13 +05302/*
3 * Mediated device interal definitions
4 *
5 * Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved.
6 * Author: Neo Jia <cjia@nvidia.com>
7 * Kirti Wankhede <kwankhede@nvidia.com>
Kirti Wankhede7b969532016-11-17 02:16:13 +05308 */
9
10#ifndef MDEV_PRIVATE_H
11#define MDEV_PRIVATE_H
12
13int mdev_bus_register(void);
14void mdev_bus_unregister(void);
15
Alex Williamson9372e6fe2016-12-30 08:13:41 -070016struct mdev_parent {
17 struct device *dev;
18 const struct mdev_parent_ops *ops;
19 struct kref ref;
Alex Williamson9372e6fe2016-12-30 08:13:41 -070020 struct list_head next;
21 struct kset *mdev_types_kset;
22 struct list_head type_list;
Parav Pandit5715c4dd2019-06-06 10:52:33 -060023 /* Synchronize device creation/removal with parent unregistration */
24 struct rw_semaphore unreg_sem;
Alex Williamson9372e6fe2016-12-30 08:13:41 -070025};
26
Alex Williamson99e31232016-12-30 08:13:44 -070027struct mdev_device {
28 struct device dev;
29 struct mdev_parent *parent;
Andy Shevchenko278bca72019-01-10 21:00:27 +020030 guid_t uuid;
Alex Williamson99e31232016-12-30 08:13:44 -070031 void *driver_data;
Alex Williamson99e31232016-12-30 08:13:44 -070032 struct list_head next;
33 struct kobject *type_kobj;
Lu Baolu8ac13172019-04-12 12:13:24 +080034 struct device *iommu_device;
Alex Williamson002fe992018-05-15 13:53:55 -060035 bool active;
Alex Williamson99e31232016-12-30 08:13:44 -070036};
37
38#define to_mdev_device(dev) container_of(dev, struct mdev_device, dev)
39#define dev_is_mdev(d) ((d)->bus == &mdev_bus_type)
40
Kirti Wankhede7b969532016-11-17 02:16:13 +053041struct mdev_type {
42 struct kobject kobj;
43 struct kobject *devices_kobj;
Alex Williamson42930552016-12-30 08:13:38 -070044 struct mdev_parent *parent;
Kirti Wankhede7b969532016-11-17 02:16:13 +053045 struct list_head next;
46 struct attribute_group *group;
47};
48
49#define to_mdev_type_attr(_attr) \
50 container_of(_attr, struct mdev_type_attribute, attr)
51#define to_mdev_type(_kobj) \
52 container_of(_kobj, struct mdev_type, kobj)
53
Alex Williamson42930552016-12-30 08:13:38 -070054int parent_create_sysfs_files(struct mdev_parent *parent);
55void parent_remove_sysfs_files(struct mdev_parent *parent);
Kirti Wankhede7b969532016-11-17 02:16:13 +053056
57int mdev_create_sysfs_files(struct device *dev, struct mdev_type *type);
58void mdev_remove_sysfs_files(struct device *dev, struct mdev_type *type);
59
Andy Shevchenko278bca72019-01-10 21:00:27 +020060int mdev_device_create(struct kobject *kobj,
61 struct device *dev, const guid_t *uuid);
Parav Pandit522ecce2019-06-06 10:52:32 -060062int mdev_device_remove(struct device *dev);
Kirti Wankhede7b969532016-11-17 02:16:13 +053063
64#endif /* MDEV_PRIVATE_H */